Earlier today I noticed one of the clowns had a little bit of white stringy poop (it eventually disappeared), so I thought nothing of it. However...... a little while ago, I noticed the other clown has the same stringy white poop!

Now, I know this isn't what it looks like because I've seen them poop before and it was definitely not white before (nor stringy).

Is this parasites? I've tried my hardest to read up on it, but the information is "iffy" at best.

Info that might help: They are false percula. We've had them for 1 month. All water parameters are just perfect, except nitrates are around ~10ish. They are active, eating well, swimming around, not fighting, not breathing heavy. They are acting totally normal, except for the white poop.